[bug #68096] exp with quaternion=0 get NaN

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URL:
  <https://savannah.gnu.org/bugs/?68096>

                 Summary: exp with quaternion=0 get NaN
                   Group: GNU Octave
               Submitter: muslim
               Submitted: Fri 27 Feb 2026 05:21:30 AM UTC
                Category: Octave Package
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Inaccurate Result
                  Status: None
             Assigned to: None
         Originator Name:
        Originator Email:
             Open/Closed: Open
         Discussion Lock: Unlocked
                 Release: 10.3.0
        Operating System: Microsoft Windows
           Fixed Release: None
         Planned Release: None


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Follow-up Comments:


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Date: Fri 27 Feb 2026 05:21:30 AM UTC By: kuo-wei <muslim>
When using quaternion-2.4.2, the following code will return 1 + NaNi + NaNj +
NaNk. However, the correct result should be 1 + 0i + 0j + 0k.

pkg load quaternion
exp(qi*0) ## exp(qi-qi) has the same result.









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